/*
 * Copyright (c) 2002-2021 "Neo4j,"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.neo4j.ogm.domain.gh704;

import java.util.Objects;

import org.neo4j.ogm.annotation.GeneratedValue;
import org.neo4j.ogm.annotation.Id;
import org.neo4j.ogm.annotation.Relationship;
import org.neo4j.ogm.id.UuidStrategy;

public abstract class RevisionEntity<T> {

    @Id @GeneratedValue(strategy = UuidStrategy.class)
    String id;

    @Relationship
    T previousRevision;

    public String getId() {
        return id;
    }

    public T getPreviousRevision() {
        return previousRevision;
    }

    public void setPreviousRevision(T previousRevision) {
        this.previousRevision = previousRevision;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o)
            return true;
        if (!(o instanceof RevisionEntity))
            return false;
        RevisionEntity<?> that = (RevisionEntity<?>) o;
        return Objects.equals(id, that.id);
    }

    @Override public int hashCode() {
        return Objects.hash(id);
    }
}
